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Anton Khirnov 8a129077cc lavc: replace internal use of AV_CODEC_CAP_AUTO_THREADS with an internal cap AV_CODEC_CAP_AUTO_THREADS was originally added in `b4d44a45f9` to mark codecs that spawn threads internally and are able to select an optimal threads count by themselves (all such codecs are wrappers around external libraries). It is used by lavc generic code to check whether it should handle thread_count=0 itself or pass the zero directly to the codec implementation. Within this meaning, it is clearly supposed to be an internal cap rather than a public one, since from the viewpoint of a libavcodec user, lavc ALWAYS handles thread_count=0. Whether it happens in the generic code or within the codec internals is not a meaningful difference for the caller. External aspects of this flag will be dealt with in the following commit.		4 years ago
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README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

libavcodec provides implementation of a wider range of codecs.
libavformat implements streaming protocols, container formats and basic I/O access.
libavutil includes hashers, decompressors and miscellaneous utility functions.
libavfilter provides a mean to alter decoded Audio and Video through chain of filters.
libavdevice provides an abstraction to access capture and playback devices.
libswresample implements audio mixing and resampling routines.
libswscale implements color conversion and scaling routines.

Tools

ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
ffplay is a minimalistic multimedia player.
ffprobe is a simple analysis tool to inspect multimedia content.
Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Coding examples are available in the doc/examples directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

Contributing

Patches should be submitted to the ffmpeg-devel mailing list using git format-patch or git send-email. Github pull requests should be avoided because they are not part of our review process and will be ignored.